detail wbs for building a house

Hello planner,

One fellow asked me for a WBS for Building a house, so here it is; If anyone has comments or additions, please feel free to provide:

Level 1: 1.House

Level 2:
1.1 Excavation
1.2 Substructure
1.3 Superstructure
1.4 External Works
1.5 Testing and Commissioning

Level 3:
1.1.1 Site Survey
1.1.2 Machine Excavation
1.1.3 Hand tools Excavation

1.2.1 Shuttering Foundation
1.2.2 Reinforcement for Foundation and column necks
1.2.3 Concreting
1.2.4 Fill around Foundation
1.2.5 Blinding under SOG
1.2.4 SOG

1.3.1 Skeleton Works
1.3.2 Finishes Works

Level 4:
1.3.1.1 Reinforce columns
1.3.1.2 Shuttering for columns
1.3.1.3 Concreting for columns
1.3.1.4 Shuttering for Slab
1.3.1.5 Install Ribs (if needed)
1.3.1.6 Reinforce Slab (handover to Engineer)
1.3.1.7 Concrete Slab (Under Engineer supervision)

1.3.2.1 Exterior Wall Cladding
1.3.2.2 Electrical and mechanical 1st fix
1.3.2.3 Interior Wall Cladding
1.3.2.4 Electrical and mechanical 2nd fix
1.3.2.5 Floor Tiling Works
1.3.2.6 False Ceiling Works

The team members must be involved in created the WBS and making sure that all the deliverables are included in it. Depending of what the person that asked the question had in mind they can complete the WBS as per their needs.

Good luck,

Samer